Reconstruct XHR GET request

//boilerplate code for an AJAX GET request using an XMLHttpRequest object.
const xhr = new XMLHttpRequest();    //common practice to name this object xhr

const url = 'https://api-to-call.com/endpoint';

xhr.responseType = 'json';    //the response is going to be formatted into JSON type
xhr.onreadystatechange = () => {    //make the event handler equal to an anonymous arrow function
  if (xhr.readyState === XMLHttpRequest.DONE) {     //Purpose of this conditional statement checks to see if the request has finished
    return xhr.response;
}
}

xhr.open('GET', url);    //.open() creates a new request and the arguments passed in determine the type and URL of the request.
xhr.send();    //send the request to the server.